INSECTICIDAL ACTIVITY OF DIENAMIDES ON CABBAGE CATERPILLAR AND BENEFICIAL INSECTS

The demand for new insecticides is increasing due to the appearance of insect populations that are resistant to currently used products. New insecticides should be efficient in controlling pests and present low toxicity to non-target organisms. Ascia monuste (Lepidoptera: Pieridae) is a destructive...

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Veröffentlicht in:Química Nova 2018-04, Vol.41 (4), p.375-379
Hauptverfasser: Lopes, Mayara, Alvarenga, Elson, Aguiar, Alex, Santos, Izailda, Silva, Gerson, Arcanjo, Lucas, Picanço, Marcelo
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container_issue 4
container_start_page 375
container_title Química Nova
container_volume 41
creator Lopes, Mayara
Alvarenga, Elson
Aguiar, Alex
Santos, Izailda
Silva, Gerson
Arcanjo, Lucas
Picanço, Marcelo
description The demand for new insecticides is increasing due to the appearance of insect populations that are resistant to currently used products. New insecticides should be efficient in controlling pests and present low toxicity to non-target organisms. Ascia monuste (Lepidoptera: Pieridae) is a destructive pest of cole vegetables, and the fire ant Solenopsis saevissima (Hymenoptera: Formicidae) is an important predator of these caterpillars in brassica crops. Tetragonisca angustula (Hymenoptera: Apidae) is very important in pollinating many plants and providing honey. Therefore, this study evaluated the toxicity of synthetic amides to A. monuste and its selectivity in favor of S. saevissima and T. angustula. The amides (2E,4E)-N-propylhexa-2,4-dienamide (3) and (2E, 4E)-N-butylhexa-2,4-dienamide (4) caused high (96 and 93%, respectively) and fast (48 h) mortality of A. monuste. The amides 3 and 4 were not harmful to the predator (mortality of 5.7% for amide 3 and 7.14% for amide 4) and were slightly harmful to the pollinator (mortality of 38.57% for amide 3 and 28.12% for amide 4). The amides 3 and 4 are promising, as insecticides, due to the high and rapid mortality of A. monuste with low and moderate toxicity to S. saevissima and T. angustula, respectively.
doi_str_mv 10.21577/0100-4042.20170192
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subjects CHEMISTRY, MULTIDISCIPLINARY
fire ant
insecticide
selectivity
Solenopsis saevissima
stingless bee
title INSECTICIDAL ACTIVITY OF DIENAMIDES ON CABBAGE CATERPILLAR AND BENEFICIAL INSECTS
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